Heat-Shrink & Cold-Shrink Sleeves

Heat Shrink
Heat shrink tubing is a type of extruded plastic tube that reduces in size when heated to a pre-determined shrink ratio to fit a specific application. A sleeve should be selected in a size larger than required to cover both the wire and components it is to be used with, before being shrunk to fit. Once fitted, the sleeve provides long lasting durability.

Materials and Types
Heat shrink is available in various different materials, colours, sizes and shrink ratios to suit the application required. Some are available with an adhesive lining that helps to bond the tubing with the cables and components.
Polyolefin is the most common material as it is highly durable and can withstand high temperatures without a restricted shelf life. They are also manufactured from PVC, fluoropolymer, neoprene and elastomeric materials. The material is often cross linked to assist with the tubing shrinking back to its original dimensions.
The pre-determined shrink ratio, for example, 2:1 or 3:1, is the measurement of how small the sleeve goes in comparison to its expanded size. When the number is higher in the shrink ratio the greater the shrinkage. It allows a precise, secure fit that does not come off easily.
Applications
Heat shrink tubing is versatile and easy to use therefore it can be applied in an assortment of applications, the most common uses being:
• Electrical insulation – covering joints and repairs
• Strain relief – relieving pressure from the cable
• Wire bundling – in harness building and cable organisation
• Environmental and mechanical protection – preventing damage from abrasion, moisture, dust and chemicals
• Identification – the wide range of colours the tubing is manufactured in allows it to be used for colour coding and component ID
Installation
When selecting the right size tubing, you should consider the maximum and minimum diameter of what you are covering. Use this information to check against the recovered diameter (the diameter after shrinking) and expanded diameter (the pre-shrinkage diameter) of the sleeve.

You can cut most tubing to a suitable length using standard scissors. The unshrunk tubing can be slid over the area or objects it is to cover. Then with a hand held heat gun or heat shrink oven, the sleeve is shrunk tightly. To prevent uneven shrinkage or overheating, check the recommended heating temperature beforehand.

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Description Price Sleeve Diameter Shrunk Diameter Colour Sleeve Type Adhesive Lined Shrink Ratio Sleeve Length Material Flame Retardant Halogen Free Series Standards Met
RS Stock No. 211-6220
BrandRS PRO
TWD811.00
1 Bag of 5
Bag(s)
4.8mm 2.4mm Black Heat Shrink No 2:1 1.2 m Polyolefin Yes Yes - BS3G 198 Part 3 Type 15, DEF 59-97 Issue3 Type 8, E1042-A6-March 2002, IEC 60684-3-216 Type C, RoHS Compliant
RS Stock No. 170-6311
Mfr. Part No.TFER-1/2-X
TWD1,207.00
Each
units
12.7mm 3.7mm Clear Heat Shrink No 3.2:1 1.2 m Teflon Fluoropolymer Yes No TFER ASTM D 876-00, ASTM D2671, Class 5, Def. Stan. 59-97 Type 5B, IEC 60243, Military AMS-DTL-23053/12 Class 3, Raychem RW-2054
RS Stock No. 433-0579
Mfr. Part No.ATUM-12/3-2-STK
TWD566.00
Each
units
12mm 3mm Red Heat Shrink Yes 4:1 1.2 m Polyolefin Yes No ATUM -
RS Stock No. 211-6214
BrandRS PRO
TWD773.00
1 Bag of 5
Bag(s)
3.2mm 1.6mm Black Heat Shrink No 2:1 1.2 m Polyolefin Yes Yes - BS3G 198 Part 3 Type 15, DEF 59-97 Issue3 Type 8, E1042-A6-March 2002, IEC 60684-3-216 Type C, RoHS Compliant
RS Stock No. 449-143
Mfr. Part No.901-10193
TWD410.00
1 Reel of 5 Metre(s)
Reel(s)
4.8mm 2.4mm Black Heat Shrink - 2:1 5 m Cross Linked Polyolefin Yes - TCN20 -
RS Stock No. 700-4548
BrandRS PRO
TWD410.00
1 Reel of 4 Metre(s)
Reel(s)
12mm 4mm Black Heat Shrink No 3:1 4 m Polyolefin Yes No - UL
RS Stock No. 277-7926
Mfr. Part No.RW-175-3/16-X
TWD235.00
Each
units
4.8mm 2.4mm Clear Heat Shrink No 2:1 1.2 m PVDF Yes No KYNAR -
RS Stock No. 700-4453
BrandRS PRO
TWD53.20
Each
units
3mm 1mm Clear Heat Shrink No 3:1 10 m Polyolefin No No - UL
RS Stock No. 399-899
BrandRS PRO
TWD59.60
Each (In a Pack of 5)
units
1.6mm 0.8mm Clear Heat Shrink No 2:1 1.2 m Polyolefin No Yes - BS3G 198 Part 3 11B, CSA C22.2 No. 198.1, IEC 60684-3-212 A&B, MIL SAE-AMS-DTL 23053/5 Class 1, RoHS Compliant, UL 224 VW-1 E48762, VG 95343 Part 5 A&B
RS Stock No. 398-458
BrandRS PRO
TWD108.00
Each
units
2.4mm 1.2mm Clear Heat Shrink No 2:1 1.2 m Fluoropolymer Yes No - SAE-AMS-DTL-23053/13
RS Stock No. 450-553
Mfr. Part No.323-20500 MA47-50/16
TWD935.00
Each
units
50mm 16mm Black Heat Shrink Yes 4:1 1 m Cross Linked Polyolefin - - MA47 -
RS Stock No. 398-436
BrandRS PRO
TWD188.00
Each
units
4.8mm 2.4mm Clear Heat Shrink No 2:1 1.2 m Fluoropolymer Yes No - SAE-AMS-DTL-23053/13
RS Stock No. 316-1647
Mfr. Part No.ATUM-12/3-0
TWD467.00
Each
units
12mm 3mm Black Heat Shrink Yes 4:1 1.2 m Polyolefin Yes No ATUM -
RS Stock No. 821-4771
Mfr. Part No.F2211/8 BK002
BrandAlpha Wire
TWD5,098.00
1 Reel of 152 Metre(s)
Reel(s)
3.1mm 2mm Black Heat Shrink No 2:1 152 m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 443-4889
BrandRS PRO
TWD242.00
1 Bag of 20
Bag(s)
1.6mm 0.8mm Clear Heat Shrink No 2:1 300 mm Polyolefin No Yes - BS3G 198 Part 3 11B, CSA C22.2 No. 198.1, IEC 60684-3-212 A&B, MIL SAE-AMS-DTL 23053/5 Class 1, RoHS Compliant, UL 224 VW-1 E48762, VG 95343 Part 5 A&B
RS Stock No. 147-247
Mfr. Part No.202K121-25/225-CS-2065-0
TWD530.00
Each
units
- 8.4mm Black - Yes - - Fluid Resistant Elastomer - - 202K1 -
RS Stock No. 821-4941
Mfr. Part No.F22111/2 CL015
BrandAlpha Wire
TWD7,818.00
1 Reel of 38 Metre(s)
Reel(s)
38.1mm 19mm Clear Heat Shrink No 2:1 38 m Polyolefin - No FIT-221 CSA, UL
RS Stock No. 398-133
BrandRS PRO
TWD441.20
Each (In a Pack of 5)
units
38.1mm 19.1mm Black Heat Shrink No 2:1 1.2 m Polyolefin Yes No - BS3G 198 Part 3 11B, CSA C22.2 No. 198.1, IEC 60684-3-212 A&B, MIL SAE-AMS-DTL 23053/5 Class 1, RoHS Compliant, UL 224 VW-1 E48762, VG 95343 Part 5 A&B
RS Stock No. 839-5479
Mfr. Part No.F2211/8 BK103
BrandAlpha Wire
TWD1,087.00
1 Box of 25
Box(es)
3.1mm 1.57mm Black Heat Shrink No 2:1 152 mm Cross Linked Polyolefin Yes No FIT-221 CSA, UL
RS Stock No. 733-5883
Mfr. Part No.18053
BrandDymo
TWD1,152.00
Each
units
9mm 1.7mm White Heat Shrink No 3:1 1.5 m Polyolefin Yes - - -